:root {
      --bg: #f6f4ec;
      --bg-soft: #eef4e8;
      --panel: #ffffff;
      --panel-green: #f4f8ef;
      --text: #1f2a24;
      --muted: #66736a;
      --deep: #234234;
      --green: #2f7d53;
      --green-dark: #1f5d3d;
      --leaf: #8ab66b;
      --line: #dce6d5;
      --warm: #c99a54;
      --shadow: 0 18px 50px rgba(47, 94, 64, 0.13);
      --radius: 22px;
      --container: 1120px;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
      color: var(--text);
      background:
        radial-gradient(circle at 12% 8%, rgba(138, 182, 107, 0.22), transparent 28%),
        radial-gradient(circle at 86% 18%, rgba(201, 154, 84, 0.13), transparent 28%),
        linear-gradient(180deg, #f8f6ef 0%, #eef4e8 44%, #f8f6ef 100%);
      line-height: 1.72;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
    }

    .container {
      width: min(100% - 32px, var(--container));
      margin: 0 auto;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(248, 246, 239, 0.88);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid rgba(220, 230, 213, 0.9);
    }

    .nav {
      min-height: 72px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
    }

    .brand {
      display: flex;
      align-items: center;
      gap: 12px;
      font-weight: 800;
      color: var(--deep);
      letter-spacing: 0.02em;
      white-space: nowrap;
    }

    .brand-mark {
      width: 40px;
      height: 40px;
      border-radius: 14px;
      background: linear-gradient(135deg, var(--green), var(--leaf));
      box-shadow: 0 10px 24px rgba(47, 125, 83, 0.22);
      position: relative;
      flex: 0 0 auto;
    }

    .brand-mark::after {
      content: "";
      position: absolute;
      width: 18px;
      height: 24px;
      border-radius: 18px 18px 4px 18px;
      background: rgba(255, 255, 255, 0.85);
      left: 12px;
      top: 8px;
      transform: rotate(28deg);
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 24px;
      color: #385045;
      font-size: 15px;
    }

    .nav-links a {
      position: relative;
      padding: 8px 0;
    }

    .nav-links a::after {
      content: "";
      position: absolute;
      left: 0;
      bottom: 4px;
      width: 0;
      height: 2px;
      background: var(--green);
      transition: width 0.25s ease;
    }

    .nav-links a:hover::after {
      width: 100%;
    }

    .nav-action {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 18px;
      border-radius: 999px;
      background: var(--deep);
      color: #ffffff;
      font-weight: 700;
      box-shadow: 0 12px 28px rgba(35, 66, 52, 0.2);
    }

    .menu-toggle {
      display: none;
      border: 1px solid var(--line);
      background: #ffffff;
      color: var(--deep);
      border-radius: 12px;
      padding: 9px 12px;
      font-weight: 700;
    }

    .hero {
      padding: 46px 0 34px;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
      gap: 32px;
      align-items: center;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 9px;
      padding: 7px 12px;
      border: 1px solid rgba(47, 125, 83, 0.2);
      background: rgba(255, 255, 255, 0.72);
      color: var(--green-dark);
      border-radius: 999px;
      font-size: 14px;
      font-weight: 700;
      margin-bottom: 16px;
    }

    .eyebrow::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--leaf);
      box-shadow: 0 0 0 5px rgba(138, 182, 107, 0.18);
    }

    h1 {
      margin: 0;
      color: #17261f;
      font-size: clamp(32px, 5vw, 56px);
      line-height: 1.12;
      letter-spacing: -0.04em;
    }

    .hero-lead {
      margin: 18px 0 0;
      max-width: 720px;
      color: #4f6258;
      font-size: 18px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 24px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 46px;
      padding: 12px 20px;
      border-radius: 999px;
      font-weight: 800;
      border: 1px solid transparent;
      cursor: pointer;
      transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
    }

    .btn:hover {
      transform: translateY(-2px);
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--green-dark), var(--green));
      color: #ffffff;
      box-shadow: 0 16px 34px rgba(47, 125, 83, 0.26);
    }

    .btn-secondary {
      background: rgba(255, 255, 255, 0.82);
      color: var(--deep);
      border-color: rgba(47, 125, 83, 0.22);
    }

    .hero-card {
      background: rgba(255, 255, 255, 0.78);
      border: 1px solid rgba(220, 230, 213, 0.9);
      border-radius: 30px;
      padding: 18px;
      box-shadow: var(--shadow);
      position: relative;
      overflow: hidden;
    }

    .hero-card::before {
      content: "";
      position: absolute;
      inset: -80px -80px auto auto;
      width: 180px;
      height: 180px;
      border-radius: 50%;
      background: rgba(138, 182, 107, 0.18);
    }

    .hero-image-wrap {
      border-radius: 24px;
      overflow: hidden;
      background: #e8efe2;
      border: 1px solid var(--line);
      position: relative;
      z-index: 1;
    }

    .hero-card-body {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
      margin-top: 14px;
    }

    .mini-stat {
      padding: 14px;
      border-radius: 18px;
      background: var(--panel-green);
      border: 1px solid var(--line);
    }

    .mini-stat strong {
      display: block;
      color: var(--deep);
      font-size: 16px;
      margin-bottom: 4px;
    }

    .mini-stat span {
      color: var(--muted);
      font-size: 13px;
    }

    section {
      padding: 28px 0;
    }

    .section-head {
      display: flex;
      align-items: flex-end;
      justify-content: space-between;
      gap: 18px;
      margin-bottom: 18px;
    }

    h2 {
      margin: 0;
      color: #1b2a22;
      font-size: clamp(24px, 3vw, 34px);
      line-height: 1.22;
      letter-spacing: -0.02em;
    }

    .section-note {
      max-width: 420px;
      margin: 0;
      color: var(--muted);
      font-size: 15px;
    }

    .pain-box,
    .summary-box,
    .contact-panel {
      background: rgba(255, 255, 255, 0.82);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      padding: 24px;
      box-shadow: 0 14px 34px rgba(62, 93, 65, 0.08);
    }

    .toc {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 12px;
    }

    .toc a {
      padding: 15px;
      border-radius: 18px;
      background: rgba(255, 255, 255, 0.78);
      border: 1px solid var(--line);
      color: var(--deep);
      font-weight: 700;
      transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
    }

    .toc a:hover {
      transform: translateY(-3px);
      border-color: rgba(47, 125, 83, 0.35);
      background: #ffffff;
    }

    .content-card {
      background: rgba(255, 255, 255, 0.86);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      padding: 26px;
      box-shadow: 0 12px 32px rgba(62, 93, 65, 0.08);
    }

    .content-card p {
      margin: 0 0 12px;
      color: #3f5147;
    }

    .content-card p:last-child {
      margin-bottom: 0;
    }

    .compare-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }

    .compare-card {
      padding: 22px;
      border-radius: var(--radius);
      border: 1px solid var(--line);
      background: rgba(255, 255, 255, 0.82);
    }

    .compare-card.highlight {
      background: linear-gradient(180deg, #ffffff 0%, #f2f8ed 100%);
      border-color: rgba(47, 125, 83, 0.28);
    }

    h3 {
      margin: 0 0 10px;
      color: var(--deep);
      font-size: 20px;
      line-height: 1.3;
    }

    ul {
      margin: 0;
      padding-left: 20px;
      color: #44574d;
    }

    li + li {
      margin-top: 8px;
    }

    .advantage-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
    }

    .advantage {
      min-height: 100%;
      padding: 22px;
      border-radius: 22px;
      background: rgba(255, 255, 255, 0.84);
      border: 1px solid var(--line);
      box-shadow: 0 10px 26px rgba(62, 93, 65, 0.07);
      transition: transform 0.22s ease, box-shadow 0.22s ease;
    }

    .advantage:hover {
      transform: translateY(-4px);
      box-shadow: 0 18px 38px rgba(62, 93, 65, 0.12);
    }

    .advantage-icon {
      width: 42px;
      height: 42px;
      display: grid;
      place-items: center;
      border-radius: 14px;
      background: #edf6e7;
      color: var(--green-dark);
      font-weight: 900;
      margin-bottom: 12px;
    }

    .advantage p {
      margin: 0;
      color: var(--muted);
    }

    .steps {
      counter-reset: step;
      display: grid;
      gap: 12px;
    }

    .step {
      counter-increment: step;
      display: grid;
      grid-template-columns: 54px 1fr;
      gap: 14px;
      align-items: start;
      padding: 18px;
      border-radius: 20px;
      background: rgba(255, 255, 255, 0.82);
      border: 1px solid var(--line);
    }

    .step::before {
      content: counter(step);
      width: 42px;
      height: 42px;
      display: grid;
      place-items: center;
      border-radius: 50%;
      background: var(--deep);
      color: #ffffff;
      font-weight: 900;
    }

    .step p {
      margin: 4px 0 0;
      color: var(--muted);
    }

    .case-strip {
      display: grid;
      grid-template-columns: 0.9fr 1.1fr;
      gap: 18px;
      align-items: stretch;
    }

    .case-note {
      background: var(--deep);
      color: #ffffff;
      border-radius: var(--radius);
      padding: 24px;
      box-shadow: 0 16px 38px rgba(35, 66, 52, 0.18);
    }

    .case-note h3,
    .case-note p {
      color: #ffffff;
    }

    .case-note p {
      margin: 10px 0 0;
      opacity: 0.9;
    }

    .data-list {
      display: grid;
      gap: 12px;
    }

    .data-item {
      padding: 16px;
      border-radius: 18px;
      background: rgba(255, 255, 255, 0.86);
      border: 1px solid var(--line);
    }

    .faq {
      display: grid;
      gap: 12px;
    }

    details {
      background: rgba(255, 255, 255, 0.86);
      border: 1px solid var(--line);
      border-radius: 18px;
      padding: 16px 18px;
    }

    summary {
      cursor: pointer;
      color: var(--deep);
      font-weight: 800;
    }

    details p {
      margin: 10px 0 0;
      color: var(--muted);
    }

    .inner-links {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 14px;
    }

    .inner-links a {
      padding: 8px 12px;
      border-radius: 999px;
      background: #edf6e7;
      color: var(--green-dark);
      font-weight: 700;
      border: 1px solid rgba(47, 125, 83, 0.18);
    }

    .contact-panel {
      display: grid;
      grid-template-columns: 1fr 180px;
      gap: 24px;
      align-items: center;
      background:
        linear-gradient(135deg, rgba(255, 255, 255, 0.92), rgba(239, 247, 232, 0.92)),
        radial-gradient(circle at 100% 0%, rgba(138, 182, 107, 0.2), transparent 30%);
    }

    .contact-lines {
      display: grid;
      gap: 8px;
      margin-top: 12px;
      color: #41544a;
    }

    .qr-box {
      padding: 10px;
      border-radius: 20px;
      background: #ffffff;
      border: 1px solid var(--line);
      box-shadow: 0 10px 24px rgba(62, 93, 65, 0.1);
    }

    .qr-box img {
      border-radius: 14px;
    }

    .caption {
      margin: 8px 0 0;
      color: var(--muted);
      font-size: 13px;
      text-align: center;
    }

    .site-footer {
      margin-top: 18px;
      padding: 26px 0;
      background: #1f3429;
      color: #e8f1e9;
    }

    .footer-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
    }

    .footer-row a {
      color: #e8f1e9;
      font-weight: 700;
    }

    .footer-small {
      color: #b8c9bd;
      font-size: 14px;
      margin-top: 6px;
    }

    .backtop {
      position: fixed;
      right: 18px;
      bottom: 18px;
      width: 44px;
      height: 44px;
      border-radius: 50%;
      border: 1px solid rgba(47, 125, 83, 0.18);
      background: #ffffff;
      color: var(--deep);
      box-shadow: 0 12px 28px rgba(35, 66, 52, 0.16);
      cursor: pointer;
      opacity: 0;
      pointer-events: none;
      transform: translateY(10px);
      transition: opacity 0.2s ease, transform 0.2s ease;
    }

    .backtop.show {
      opacity: 1;
      pointer-events: auto;
      transform: translateY(0);
    }

    .reveal {
      opacity: 0;
      transform: translateY(18px);
      transition: opacity 0.55s ease, transform 0.55s ease;
    }

    .reveal.visible {
      opacity: 1;
      transform: translateY(0);
    }

    @media (prefers-reduced-motion: reduce) {
      html {
        scroll-behavior: auto;
      }

      .reveal,
      .btn,
      .advantage,
      .toc a {
        transition: none;
      }
    }

    @media (max-width: 900px) {
      .menu-toggle {
        display: inline-flex;
      }

      .nav-links {
        position: absolute;
        left: 16px;
        right: 16px;
        top: 72px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
        padding: 14px;
        border-radius: 18px;
        background: #ffffff;
        border: 1px solid var(--line);
        box-shadow: var(--shadow);
      }

      .nav-links.open {
        display: flex;
      }

      .nav-action {
        width: 100%;
      }

      .hero-grid,
      .case-strip,
      .contact-panel {
        grid-template-columns: 1fr;
      }

      .toc,
      .advantage-grid {
        grid-template-columns: 1fr 1fr;
      }

      .section-head {
        align-items: flex-start;
        flex-direction: column;
      }

      .qr-box {
        max-width: 190px;
      }
    }

    @media (max-width: 620px) {
      .container {
        width: min(100% - 24px, var(--container));
      }

      .hero {
        padding-top: 30px;
      }

      .hero-card-body,
      .compare-grid,
      .toc,
      .advantage-grid {
        grid-template-columns: 1fr;
      }

      .content-card,
      .pain-box,
      .summary-box,
      .contact-panel {
        padding: 20px;
      }

      .footer-row {
        align-items: flex-start;
        flex-direction: column;
      }
    }